[llvm] [RISCV][WIP] Let RA do the CSR saves. (PR #90819)

[Mikhail Gudim via llvm-commits]

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@@ -262,6 +267,7 @@ bool PEI::runOnMachineFunction(MachineFunction &MF) {
   // called functions.  Because of this, calculateCalleeSavedRegisters()
   // must be called before this function in order to set the AdjustsStack
   // and MaxCallFrameSize variables.
+  RDA->reset();
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mgudim wrote:

Yes, thanks.

https://github.com/llvm/llvm-project/pull/90819